146results about How to "Reduce filter effect" patented technology

The invention discloses an underground water extraction and reinjection circular treatment device, and relates to the technical field of underground water treatment.The underground water extraction and reinjection circular treatment device comprises an equipment frame, a servo motor is fixedly installed above the equipment frame, and a transmission shaft is fixedly installed at the output end of the servo motor; a supporting plate is fixedly installed on the inner wall of the equipment frame, the end, away from the servo motor, of the transmission shaft rotationally penetrates through the upper wall and the lower wall of the supporting plate, a water outlet pipe fixedly penetrates through the surface of the equipment frame, and a water inlet pipe fixedly penetrates through the bottom of the equipment frame; the purification device comprises a separation frame, a fixing rod, a sleeve, a lifting frame, a purification frame, a filter plate and a fixing plate, the underground water extraction and reinjection circulation treatment device can effectively remove peculiar smell and colored pollution under the action of activated carbon, meanwhile, large-particle impurities are effectively removed, and the purification effect on underground water is improved.

The invention relates to water supply equipment and a cleaning method thereof, electronic equipment and a computer readable storage medium, and the cleaning method of the water supply equipment comprises the following steps: obtaining a cleaning starting instruction; controlling a water inlet section, a waterway branch, a wastewater branch and a flushing branch passage according to the cleaning instruction, and flushing the front filter element, the reverse osmosis filter element and the rear filter element; and finishing flushing when the flushing time reaches the first preset time. According to the cleaning method, impurities, dirt and sediments accumulated in the use process of the filter elements can be effectively removed by flushing the front filter element, the reverse osmosis filter element and the rear filter element, accumulation of the impurities on the filter elements is reduced, the blocking risk of the filter elements is reduced, the actual service life of the filter elements is prolonged, and the service life of the filter elements is prolonged. And the cost of frequently replacing the filter element is also reduced.

The utility model belongs to the technical field of white spirit production, and particularly relates to a filtering device with an anti-blocking structure for white spirit production, which comprises a filter cartridge for filtering white spirit, the top of the filter cartridge is fixedly communicated with a white spirit inlet pipe, and an annular impurity receiving groove is fixedly connected in the filter cartridge. The top of the annular impurity receiving groove is fixedly connected with an arc-shaped filter screen, and an automatic cleaning assembly is arranged between the arc-shaped filter screen and the white spirit inlet pipe. The device is reasonable in structural design, the purpose of automatically cleaning the arc-shaped filter screen can be achieved through the operation of the arc-shaped filter screen and the cleaning brush for flowing and autorotation of white spirit, the situation that the white spirit filtering efficiency and effect are reduced due to the fact that the arc-shaped filter screen is blocked by impurities is avoided, the impurities fall into the annular impurity receiving groove to be collected under the cleaning of the cleaning brush, and the service life of the white spirit is prolonged. The driving motor can be started regularly so as to drive the scraping plate to rotate in the annular impurity receiving groove, and impurities in the annular impurity receiving groove can be swept into the impurity discharging pipe to be discharged.

The filter element cleaning structure comprises a high-pressure filter element and a filter element head, the filter element head is fixedly installed at the top of the high-pressure filter element, moving rods are fixedly connected to the two sides of the bottom of the filter element head, moving blocks are movably connected to the surfaces of the moving rods, moving rings are fixedly connected to the inner sides of the moving blocks, and the moving rings are fixedly connected to the inner sides of the moving blocks. And a scraping ring is fixedly mounted at the bottom of the inner side of the moving ring. By arranging the moving rod, the moving block, the moving ring and the scraping ring, the moving block can effectively drive the moving ring to move on the surface of the moving rod, then the moving ring is pulled to move up and down through the adjusting assembly, the scraping ring on the inner side of the moving ring can clean the surface of the high-pressure filter element, and the problem that the surface of the high-pressure filter element cannot be cleaned due to the absence of a cleaning structure is solved. The problems that after the filter element is used for a long time, impurities and dust can be blocked and adsorbed on the surface of the filter element, the filtering effect of the filter element is reduced, the service life of the filter element is shortened, and normal use of the filter element filter is affected are solved.

The utility model discloses a filtering device convenient to clean, which belongs to the technical field of fruit juice production and comprises a filtering box and a filtering assembly, the filtering assembly comprises a sealing plate and two U-shaped filtering frames, the adjacent sides of the two filtering frames are fixedly connected with the sealing plate, the inner side wall of each filtering frame is fixedly connected with a filtering net, and the filtering net is arranged in the filtering box. The adjacent sides of the two filter screens are fixedly connected with the sealing plate, the two side faces of the filter box are slidably connected with the sealing plate through formed through grooves, the end, away from the sealing plate, of the filter frame is fixedly connected with a limiting plate, and the end, away from the filter frame, of the limiting plate is fixedly connected with a U-shaped inverted pulling plate. The two ends of the side face of the limiting plate are fixedly connected with powerful magnets through formed through grooves, the end faces of the powerful magnets are connected with iron blocks in a magnetic attraction mode, the ends, away from the powerful magnets, of the iron blocks are fixedly connected with the filtering box, and the end faces of the iron blocks are embedded into the filtering box. The filtering efficiency of the device is improved.

The utility model discloses a quenching liquid filtering and cooling device, which comprises a main body unit, a cooling unit and a cooling unit, the main body unit comprises a quenching box and a filtering box, the quenching box is fixedly connected to the upper end face of the filtering box, the lower end of the filtering box is provided with a cooling box, and the quenching box and the cooling box are jointly provided with a backflow assembly; and the operation unit comprises a rotating block, and a round hole is formed in the side wall of the filter box. A tool is inserted into the cross-shaped groove of the rotating block, the rotating tool can drive the rotating block to rotate, the knocking head can be driven to move through the arrangement of the rotating block, the rotating rod, the rotating gear, the toothed plate and the vertical rod, and when the knocking head moves downwards to collide with the filter screen plate, the filter screen plate can vibrate, so that the filter screen plate can vibrate. By arranging the filter screen plate, chips filtered from the filter screen plate can be discharged from the material passing opening along the filter screen plate, so that the filtered chips can be conveniently collected and treated, and the situation that the filtering effect of the device is reduced due to the fact that the chips block filter holes of the filter screen plate is avoided.

The invention relates to the technical field of sewage treatment equipment, and particularly discloses graded sewage treatment equipment for ecological restoration of a water area, the graded sewage treatment equipment comprises an outer frame body, the outer frame body is tubular, the outer surface of the top of the outer frame body is fixedly connected with a mounting frame, and the top of the mounting frame is arranged above the outer frame body. In the filtering process, a motor is started to drive a rotating rod to rotate, and meanwhile, a rotating ring is driven to rotate through a connecting frame, so that a poke rod on the rotating rod rotates along with the rotating rod, and sewage preliminarily entering a filtering frame is poked; untreated sewage containing a large amount of impurities is prevented from precipitating in the filtering frame to block the filtering frame and reduce the filtering effect, meanwhile, when a motor is started, a filtering plate can be driven to move on the upper surface of a filtering ring, a cavity between the filtering frame and the outer frame body is stirred through the filtering plate, the impurities passing through the filtering frame are prevented from blocking the filtering ring, and the filtering effect is improved. The filtering effect is further improved, and the filtering fluency is improved.

The invention discloses a filtering and circulating device for excimer laser gas, and belongs to the technical field of excimer lasers. The filter comprises a hollow cylindrical outer shell, an air inlet pipeline and an air conveying pipeline are installed at the upper end of the outer shell, and a purification box body is installed in the outer shell; the turbine pump is rotationally arranged outside the rectangular cavity; the cross flow fan is rotationally arranged in the rectangular cavity; and the output end of the double-shaft output motor is respectively connected with the turbine pump and the cross flow fan. The flow of working gas in the backflow discharge cavity is increased, meanwhile, the flowing speed of the working gas is increased, the filtering efficiency of the filter on discharge dust particles is improved, meanwhile, the filter screen rotates all the time and can be self-cleaned, and the effective filtering area of the filter screen can change along with the speed of the working gas. And the filtering effect is ensured while the filtering efficiency is ensured.

The utility model relates to the technical field of dispensing machines, and discloses a feeding system for a dispensing machine, which comprises a storage box, the top of the inner side of the storage box is rotatably connected with a driving gear, the top of the inner side of the storage box is abutted against a driven gear, the driving gear and the driven gear are meshed with each other, the inner wall of the storage box is fixedly connected with a gear ring, and the inner wall of the storage box is fixedly connected with the gear ring. The driven gear is meshed with the gear ring, stirring rods are fixedly connected to the bottom of the driving gear and the bottom of the driven gear, a plurality of stirring blades are fixedly connected to the peripheries of the two stirring rods, and a driving assembly is arranged at the top of the storage box. According to the adhesive stirring device disclosed by the utility model, the driving gear, the driven gear, the gear ring, the stirring rod, the stirring blades, the motor and the rotating rod are matched with one another, so that the motor can be started to drive the stirring rod and the stirring blades to fully stir an adhesive in the storage box, and the adhesive is kept in a flowing state and is prevented from caking or hardening.

The present invention belongs to the technical field of clothing manufacturing equipment, and in particular to a dust removal device for textile machinery and a method of using the same, comprising a clothing manufacturing machine, a top plate fixed on the upper surface of the clothing manufacturing machine, and a dust cover screwed to the surface of the top plate, the surface of the top plate being screwed to a dust removal fan, and the interior of the dust cover being provided with a dust removal mechanism. The device is provided with a dust removal mechanism, and can intercept and filter the generated cotton wool and fine fibers as well as dust in the air, thereby greatly improving the working environment and reducing the dust content in the air. The device can automatically clean the surface of the dust filter element to ensure the filtering effect of the dust filter element, and avoid dust backflowing back into the work workshop to cause pollution to the working environment, thereby creating a cleaner, healthier and more comfortable working environment for workers, helping to improve the work enthusiasm and work efficiency of workers, and reducing health problems such as respiratory diseases caused by dust.

The invention discloses a sponge city water body purification device, and relates to the technical field of environmental science and engineering, the sponge city water body purification device comprises an ecological floating island, a water collection pipe and a treatment tank, a collection device, a treatment device and an auxiliary device are arranged below the ecological floating island, through the arrangement of the collection device, a culture plate is arranged on the ecological floating island to culture ecological plants, and the treatment device is arranged below the treatment tank; the ecological plants can directly or indirectly absorb and utilize soluble nitrogen, phosphorus and other nutrient substances in the water body, or convert the nutrient substances into non-toxic intermediate metabolites and store the intermediate metabolites in plant cells, so that the purpose of removing part of pollutants in the water is achieved, the water body decontaminated by the ecological plants can enter the water collecting pipe, and the water body is prevented from being polluted by the ecological plants. The workload and cost of subsequent purification treatment can be reduced through the flow discarding ball, meanwhile, the maintenance and management cost can be reduced, water flow entering the purification device can more uniformly pass through all parts of the purification device through the baffle rotating in a reciprocating mode, and the overall purification effect is improved.

The present application relates to the field of battery technology, and in particular to a positive electrode slurry of a Prussian blue compound, a preparation method thereof, and a positive electrode sheet. The preparation method of the positive electrode slurry of the Prussian blue compound comprises the following steps: obtaining a Prussian blue compound solution with a solid content of 10% to 80% by a coprecipitation method; placing the Prussian blue compound solution, a binder, a conductive agent, and an optional thickener in a solvent and mixing them evenly to obtain a positive electrode slurry of the Prussian blue compound. This method solves the problem that the dry powder of the Prussian blue compound is difficult to disperse into the slurry, thereby improving the capacity and initial efficiency of the battery prepared by the positive electrode slurry prepared by the method.

The invention discloses a plasma deodorization power supply, and relates to the technical field of deodorization power supplies, the plasma deodorization power supply comprises a plasma generator, a protection shell is arranged at the front end of the plasma generator, a plurality of high-voltage power supplies are arranged in the protection shell, and the plasma deodorization power supply further comprises an air collection assembly used for collecting gas; the heat dissipation assembly comprises an air outlet pipe arranged in the plasma generator, and the air outlet pipe is provided with a plurality of air outlet pieces inserted into the upper side in the high-voltage power supply; the damp-proof assembly comprises a liquid collecting piece arranged in the plasma generator, and the lower end of the liquid collecting pipe is inserted into the liquid collecting piece; through the arrangement of the flow guide cover, the flow guide pipe and the air outlet pipe, the heat exchange between the power supply and external gas in the closed space can be realized, the heat dissipation efficiency is improved, and through the spirally arranged air outlet pipe and the liquid collecting pipe, the gas for heat dissipation is dehumidified, and the erosion of the moisture to the high-voltage power supply is prevented.

The filter cartridge with the built-in filter element comprises a base, a shell, the filter element and a sealing cover, the top of the base is fixedly connected with the bottom of the shell, the filter element is placed in the shell, and the top of the filter element penetrates to the top of the sealing cover. According to the utility model, the base, the shell, the filter element, the sealing cover, the adjusting mechanism and the positioning mechanism are matched for use, so that impurities and harmful substances in air are cleaned through the filter element when the filter cartridge is used, and the impurities and the harmful substances are adhered to the surface of the filter element to reduce the filtering effect due to long-time use; however, an existing filter element is a disposable product, the filter element cannot be detached and cleaned independently, the maintenance cost is increased, in order to conveniently clean the filter element and reduce the maintenance cost, the filter cartridge with the built-in filter element is provided, when the filter cartridge is cleaned, a worker can conveniently detach the filter element, and the maintenance cost is reduced. And the service life of the filter cartridge is prolonged.

The invention relates to an industrial boiler waste heat utilization structure which comprises a waste heat utilization tank protection body, a dust cleaning assembly, ventilation pipes, a splicing filtering assembly and a waste heat utilization assembly, the dust cleaning assembly is installed in the waste heat utilization tank protection body, and the ventilation pipes are connected to the outer walls of the two sides of the waste heat utilization tank protection body in a penetrating mode. A splicing filtering assembly is installed on the ventilation pipe, and a waste heat utilization assembly is installed at the top end of the waste heat utilization tank protection body. The dust cleaning assembly is adopted, when smoke of the boiler is utilized, dust attached to the interior of equipment can be cleaned through a cleaning structure, the waste heat utilization effect is ensured, manual cleaning of the boiler is not needed, the heat transfer effect of the boiler is ensured, and the use effect of the equipment is improved; the spliced filtering assembly is adopted, the equipment and the boiler can be spliced through a clamping structure, smoke can be filtered, the filtering effect is reduced, and the spliced filtering effect is improved.

The invention discloses an integrated urban sewage water treatment device and a method for using the device, comprising a treatment component, wherein a plurality of mutually parallel isolation plates are fixedly connected inside the treatment component, a cleaning mechanism is installed on the upper surface of the treatment component, and a collecting mechanism is installed inside the treatment component; through the arrangement of structures such as the treatment component, the isolation plate, the cleaning mechanism, the collecting mechanism, the aeration mechanism, and the drug delivery and disinfection mechanism, during the sewage treatment process, the sewage is circulated inside the treatment shell through a water supply pump, and through the arrangement of an aeration fan, the aeration device inputs oxygen into the aerobic bin, thereby improving the activity of microorganisms inside the aerobic bin, thereby making the reaction effect of the aerobic bin better, and at the same time, through the arrangement of a drainage pump, the sewage sediment inside the aerobic bin, the anaerobic bin and the sedimentation bin is discharged, making the sewage treatment more convenient.

This utility model relates to a three-part quick-connect ball valve with filtration function, comprising a three-part valve body, a secondary pipe body laterally provided on the main pipe body, and a quick-connect assembly at the second outlet; a spherical valve core is provided in the secondary pipe body, which can be rotated to block or open the second outlet to form an adjustable flow channel; the valve body is provided with a rotatable operating part, which is fixedly connected to the spherical valve core by a valve stem; the filter cartridge includes a hollow filter frame, which is provided with an inner filter screen and an outer filter screen. The beneficial effects of this utility model are: the double-layer filter structure distributes the filtration pressure, and can maintain good filtration performance even in fluid environments with high impurity content, thereby preventing hard impurities from accumulating on the spherical valve core and rusting it.

The utility model discloses water quality environmental protection monitoring equipment, which relates to the technical field of water quality monitoring and comprises a box body, a water pumping pipe, a second water conveying pipe and a water collecting tank, the water pumping pipe is arranged at the bottom of the box body in a penetrating manner, and the second water conveying pipe and the water collecting tank are arranged in the box body. A filter plate is mounted on the bottom surface of the water pumping pipe and can filter water pumped by the water pumping pipe, so that particles such as silt are prevented from entering the water pumping pipe, a button of a dismounting assembly is pressed to drive clamping blocks to move outwards at the same time, the filter plate can be conveniently dismounted, replaced and mounted, and the situation that the filtering effect of the filter plate is reduced due to long-term use is avoided; by arranging the telescopic assembly, the telescopic assembly can drive the second water conveying pipe to be away from the position above the water collecting tank along with operation of the motor, the height of the second water conveying pipe can be conveniently adjusted, the second water conveying pipe can be driven to move to the position above the water collecting tank when the motor is stopped, and therefore water sprayed out of the second water conveying pipe is prevented from being spilled out of the water collecting tank.

The utility model relates to the technical field of steam recovery, and provides a waste heat steam recovery device which comprises a bottom plate, a condensing tower is fixedly installed at the center of the top of the bottom plate, a filter box is fixedly installed at the top of the condensing tower, and the filter box is communicated with the condensing tower; waste heat steam is conveyed into the filter box through the air inlet pipe, the waste heat steam is filtered through the two filter boxes, through holes are formed in the bottoms of the two filter boxes, the waste heat steam can better circulate, the filter boxes can intercept solid particles and impurities in the waste heat steam, and the quality of water is improved; a plurality of flow guide plates are fixedly mounted at the center of the filter box, the flow guide plates can better guide waste heat steam to flow, the recycling efficiency is improved, cooling water can be added into the condensing tower through a water inlet pipe, the waste heat steam is condensed and liquefied, water in the waste heat steam is extracted out, the liquefied water can be extracted out through a water pump, and the water recycling efficiency is improved. Therefore, the waste of water resources is reduced.

The utility model belongs to the technical field of filters, and particularly relates to a double-layer grid filter convenient to clean, which comprises a mounting frame, a square counter bore is arranged at the bottom of the mounting frame, fixing grooves are arranged on two sides of the square counter bore, and a first filter plate is fixedly mounted at the top of the mounting frame. A plurality of first filter holes are formed in the front surface of the first filter plate, a second filter plate is movably mounted in the mounting frame, and a second filter hole is formed in the front surface of the second filter plate. Through the structural design of the mounting frame, the square counter bore, the fixing groove, the first filter plate, the first filter hole, the second filter plate and the second filter hole and through mutual cooperation of the structures, the functions of efficient filtration and quick disassembly and cleaning are achieved, the problem that cleaning is inconvenient due to easy blockage is solved, maintenance can be more convenient, and the service life of the filter is prolonged. The labor cost and the time cost in the maintenance process are reduced, and the filtered sundries can be easily taken out, so that subsequent cleaning and maintenance are facilitated.

The application discloses a kind of green building wall structure, comprising: wall, filter, water storage part and water supply assembly;Wall outside is planted pot for planting potted plant, is opened with cavity from top to bottom in wall, water storage part is equipped at the bottom of cavity, water storage part is suitable for containing rainwater flowing into cavity, water supply assembly rainwater in water storage part is sent to planting pot to irrigate potted plant, to realize saving resources, environmental protection, reduce environmental pollution.In the upper portion of cavity, filter is arranged, filter is used to filter rainwater flowing into cavity from the top of wall, impurities in rainwater are intercepted on filter, so as to avoid impurities in rainwater from causing blockage of water supply assembly, increase maintenance cost.

The utility model discloses a cutting device for glass fiber board production, which belongs to the technical field of glass fiber board production equipment and comprises a cutting support box for supporting a glass fiber board, and the inner top wall of the cutting support box is communicated with an air outlet box for dust to enter during glass fiber board processing. Cross-shaped grooves used for sliding are formed in the two sides of the interior of the air outlet box, springs are connected to the inner bottom walls of the two cross-shaped grooves, one ends of the springs are connected with cross-shaped plates, the cross-shaped plates are arranged in the cross-shaped grooves in a sliding mode, and second filter plate frames used for supporting are installed on the peripheries of the cross-shaped plates. According to the cutting device for glass fiber board production, the dust treatment capacity can be improved, the situation that dust pervades in a workshop is reduced, the health of operators is guaranteed, normal operation of equipment is guaranteed, tool abrasion is reduced, and the cutting precision and the product quality are improved.

The utility model relates to elevator air conditioning technical field discloses a kind of elevator air conditioning filter return air inlets, including machine body, the outside of machine body is fixedly connected with fixed shell, the middle part of fixed shell is fixedly connected with return air pipe, the top of fixed shell is installed with sealing mechanism, the inside of fixed shell is slidably connected with filter plate, the inside of fixed shell is installed with fixed assembly, the sealing mechanism includes rotating assembly and buckle assembly, the rotating assembly includes fixed link, the middle part of fixed shell is fixedly connected in the fixed link, the outer periphery of fixed link is rotatably connected with rotating block, the end of rotating block is fixedly connected with cover shell. In the utility model, by rotating cover shell, make buckle and hook joint, rotating handle makes cover shell and sealing pad closely adhere fixed shell top, fixed shell is sealed, prevent air conditioning return air too big through gap discharge produce a large amount of noise and pollution to environment.

The utility model provides a multi-stage filtering type quartz sand filter and belongs to the technical field of filters. Comprising a filter body; the filtering water inlet is formed in the top end of the filter body; the filtering part is positioned in the filter body and is used for filtering a water source entering from the filtering water inlet; the extruding part is positioned in the filter body and is arranged to extrude the filtering part so as to reduce a gap between the quartz sand in the filtering part; the power supply part is mounted at the top end of the filter body and is used for supplying energy to the extrusion part. By arranging the buffer piece, the speed of water flow impacting the filtering part is reduced, and the situation that gaps between quartz sand of the filtering part are increased, so that the filtering effect is reduced is prevented.

The utility model relates to the technical field of activated carbon boxes, and discloses an activated carbon box which comprises a front shaft, a middle shaft and a rear shaft. The front shaft is trapezoidal and is used for introducing air needing to be treated; the middle shaft is cuboid-shaped, and two ends of the middle shaft are respectively communicated with the front shaft and the rear end; the rear shaft is trapezoidal and is used for discharging clean air subjected to activated carbon adsorption treatment; the center shaft comprises a bearing shell, a fixing frame, an adsorption layer and a fixing plate. The multiple sets of fixing frames are inserted into the bearing shell at equal intervals. The introduced air is divided through the fixing frame; the adsorption layer is arranged in the fixing frame; the fixing plate is connected with the bearing shell through bolts.

This invention discloses a swimming pool circulation filtration device, comprising a filter element including a filter pipe, an inlet cone pipe, and an outlet sewage pipe; a reversing element disposed on one side of the filter element, including a reversing box, a flexible drum, and a reversing spring; and a drainage element disposed on one side of the reversing element, including a drainage pipe and a support base. This invention, through the cooperation of the filter element, the reversing element, and the drainage element, can switch the direction of water flow through the filter screen when the filter screen's filtration capacity decreases, flushing down impurities attached to the filter screen and into the sewage pipe.

The utility model relates to the technical field of mud filtering, and discloses mud filtering equipment for oil exploitation, which comprises a box body, a motor is fixedly assembled at one end of the box body, a water pump is fixedly assembled at one end, far away from the motor, of the box body, a water tank is fixedly assembled at the water outlet end of the water pump, a feeding pipe is fixedly assembled on one side of the box body, and a discharging pipe is fixedly assembled on the other side of the box body. A placement groove is formed in the other side of the box body, and a blow-off pipe is fixedly assembled at the end, close to the motor, of the box body. Slurry enters the box body through the feeding pipe, then the rotating rod is driven by the power output shaft of the motor to rotate, so that the rotating rod drives the conveying belt to rotate, the slurry falls on the outer wall of the conveying belt when entering the box body, and gravel in the slurry is buffered by the conveying belt; slurry is prevented from directly falling onto the conveying belt to damage the conveying belt, so that the filtering effect of the conveying belt is reduced, the conveying belt is protected, and the service life of the conveying belt is prolonged.

The present invention discloses a low-frequency noise reduction interconnected oil filter unit and a method for using the same, comprising a machine body, wherein an oil tank, a coarse filter tank and a fine filter tank are arranged inside the machine body; a primary filter device is arranged at the top of the oil tank, and the primary filter device comprises: a filter barrel, wherein a plurality of filter barrels are fixedly connected to the top of the oil tank; a connecting mechanism, wherein the connecting mechanism is arranged above the plurality of filter barrels; a barrel cover, wherein the barrel cover is slidably interlaced with the inner cavity of the filter barrel; an installation mechanism, wherein the installation mechanism is arranged at the top of the plurality of filter barrels and is used to position the barrel cover; and a filtering mechanism, wherein the filtering mechanism is connected to the barrel cover and is used to perform a primary filtration on the oil. The present invention utilizes a setting method in which the filter barrel, the connecting mechanism, the barrel cover, the installation mechanism and the filtering mechanism are coordinated, and utilizes a three-way pipe to simultaneously enable two filter barrels to perform a primary filtration on the oil with impurities, and can clean the filter plate without stopping the machine, thereby saving the user's time and improving the oil filtering efficiency of the oil filter.

The utility model provides a water sample filtering device, which relates to the technical field of filtering devices and comprises a frame and a box body, a drain pipe is fixedly mounted at the bottom of the box body, a valve is fixedly mounted on the outer wall of the drain pipe, a limiting column is fixedly mounted in the box body, a motor I is fixedly mounted on one side of the box body, and a motor II is fixedly mounted on the other side of the box body. A two-way threaded rod is fixedly mounted at the output end of the first motor. According to the device, the limiting column, the first motor, the two-way threaded rod, the clamping rings and the round frame are arranged, the first motor is started, the first motor can drive the two-way threaded rod to rotate when working, and the two-way threaded rod can drive the two sets of clamping rings to slide in the opposite directions on the outer wall of the limiting column in the rotating process; the two groups of clamping rings are far away from the round frame after sliding for a certain distance, and the round frame and the filter barrel can be taken down for cleaning after being far away, so that the problem that the filtering effect of a water sample is reduced due to the fact that the blocked filter barrel cannot be detached is effectively avoided.

The utility model provides an oil layer sand production prevention device which comprises a base pipe framework and a plurality of annular steel wires wound on the outer side of the base pipe framework, a liquid passing gap is formed between every two adjacent annular steel wires, a plurality of radial flow guide grooves are formed in the upper surface and the lower surface of each annular steel wire, and in the same annular steel wire, a plurality of radial flow guide grooves are formed in the upper surface and the lower surface of each annular steel wire. The radial flow guide grooves are aligned up and down; the depth of the radial flow guide grooves is smaller than the width of the liquid passing gaps, and the radial flow guide grooves are used for guiding fluid to the inner side of the annular steel wire. The oil layer sand production control device has the advantages of being scientific in design, not prone to blockage, long in service life and high in practicability.